<template>
    <div class="list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">{{this.city}}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper" 
                    v-for="item of hot" 
                    :key="item.id"
                    @click="handleClickCity(item.name)"
                    >
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div class="area" 
            v-for="(item,key) of cities" 
            :key="key"
            :ref="key"
            >
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list">
                    <div class="item border-bottom" 
                    v-for="innerItem of item"
                    :key="innerItem.id"
                    @click="handleClickCity(innerItem.name)"
                    >{{innerItem.name}}</div>
                </div>
            </div>
        </div>
    </div>
</template>
<script>
import {mapState} from 'vuex'
import Bscroll from 'better-scroll'
export default {
    name:'CityList',
    props:{
        hot:Array,
        cities:Object,
        letter:String
    },
    methods:{
        handleClickCity(city){
        this.$store.commit("changeCity",city) 
        // this.changeCity(city)
        this.$router.push('/')
        },
    },
    mounted(){
        this.scroll = new Bscroll(this.$refs.wrapper)
    },
    watch:{
        letter () {
            if(this.letter){
                const element = this.$refs[this.letter][0]
                this.scroll.scrollToElement(element)
            }
        }
    },
    computed:{
        ...mapState(['city'])
    }
}
</script>
<style lang="stylus" scoped>
    @import '~styles/varibles.styl'
    .border-topbottom
        &:before
            border-color:#ccc
        &:after
            border-color:#ccc
    .border-bottom
        &:before
            border-color:#ccc
    .list
        overflow: hidden
        position:absolute
        top:1.58rem
        left:0
        right:0
        bottom:0
        .title
            line-height:.54rem
            background:#eee
            padding-left:.2rem
            color:#666
            font-size:.26rem
        .button-list
            overflow: hidden
            padding:.1rem .6rem .1rem .1rem
            .button-wrapper
                float:left
                width:33.33%
                .button
                    margin:.1rem
                    padding:.1rem
                    text-align: center
                    border:.02rem solid #ccc
                    border-radius:.06rem
        .item-list
            .item
                line-height:.76rem
                padding-left:.2rem
</style>